Portable elevator



- H. S. GERM OND, JR.

PORTABLE ELEVATOR.

APPLICATION FILED MAR. n,1920.

Patented Feb. 14, 1922.

WITNESSES W win ATTORNEYS siren STATES PATENT OFFICE.

HENRY siinnnnn ens-Morin, orsayoivn'n, new a'r-nsnv, assrenon T0nnvonva- 'EORGOMPANY, or annsnv orrY, NEW JERSEY, a ooaronnrronor newJERSEY.

. PORTABLE ELEVATOR.

Specification of Letters Tiatent. Pgtgnted Feb, 14, 192,2,

' Application filed March 11, 1920. Serial No. 364,971.

To all whom it may concern:

Be it known that I, H NRY SI-IELDEN Gnniroivn, J12, a citizen of theUnited States of America, residing at Bayonne, in the county of Hudsonand State oi New Jersey, have invented certain new and usefulImprovements in Portable Elevators, of which the following is aspecification, reference being had to the accompanying drawings.

This invention relates to improvements in portable elevators (otherwiseknown as tiering machines), and particularly to improve ments in theconstruction and arrangement of the load-carrying platform (orliftingcarriage) thereof; and an object of this invention is to providea tiering-machine the lifting-carriage of which may be more readilyloaded and unloaded than has been practicable to accomplish withmachines heretofore known. Another object of this invention is toprovide a tiering-machine in which it will be practicable to raise theliftingcarriage'to a greater height than is the case with priortiering-machines having the same over-all vertical dimension; or, bymeans of this invention, it is made practicable to lessen the latterdimension of the tieringmachine and yet to raise the load to a heightequally as great as was possible with prior machines having a greaterheight over all.

In the drawings illustrating the principle of this invention and thebest mode now known to me of applying that principle, Fig. 1 is a rearelevation of a tiering-machine embodying this invention; and Fig. 2 is aside elevation of the same, partly in section on the line lL-II oi Fig.1.

The tiering-machiue comprises a pair of base-arms a, one at each side,from which rises a pair of mainframe standards 3) the upper ends ofwhich are connected by a cross-beam c from which hangs the pulley (Z. Acable 6 is rove over the latter and one of its ends is wound upon theWindlass-drum f of the hoist g or" the machine, which hoist is operatedby turning the crank-handle it. The rear part of each base-arm a of thetruck-frame of the elevator is supported by a truck-wheel or rear-wheel2', while the front of the elevator is supported, while being moved fromplace to place over the floor, by means oi a caster-wheel j, and is heldimmovable, by being lowered (for example) until the weight rests uponposts is, of which there is one arranged near the front end of eachbase-arm a. The parts hereinbefore mentioned are common to portableelevators already known to the art. Each side of the load-carryingplatform or lifting carriage m is L-shaped and consists of avertically-disposed arm-member a and a horizontally-disposed arm-member0, which are securely joined together in any suitable manner, as by theTangle-piece 37. To each of the horizontal arms 0, there is pivotallyconnected one end of each of a pair of links the pivot r of one of thelatter is arranged near the front end of the arm 0, while the PlXOlJ rof the other link g is located near therear end of the arm 0. Betweenthe arms 0, there lies, in its lowermost position, a basket orreceptacle .9 adapted and designed to receive the load (or to serve as aload-receiver). This basket 8 is U-shapcd and has sides 8 and a floor or7 bottom 8. To each side 5 of the load-receiver or basket 8 arepivotally secured at r the other or rear ends of the pair of links Qthat swing on the pivots r, r, of the adjacently-lying arm 0 of thelifting-platform m. It will be readily understood, from the descriptionjust given, that the basket 5 may be swung up and down upon the links 9,relatively to the horizontal arms 0 of the platform m, which may be saidto serve as a sort of a cradle for it, to raise the basket .9, the other(or rear) end of the cable 6 is fastened to the front of the basket s,near the midpoint (as at 8X), by means of a suitable shackle contrivance2?, for example. in its lowermost position, the basket 8 rests with itsbottom 8 supported by the door of the building (e. g., a warehouse);and, when in this position, the basket 8 may be most easily loaded.After loading the basket .9, the operator turns the crank-handle It soas to wind up the cable 6. As the cable is wound up, the basket 8 israised, swinging up on the link-arms g, which pivot on the platform-arms0 at the points 9, 1*, as set forth hereinbe'fore. The upward movementor the basket 8 relatively to the platformarms 0 (which, for thetimebeing, remain motionless) continues, until the link-arms 9 have risen toa substantially vertical position (see the dotted-line position of thebasket in the lower part of Fig. 2), whereupon further winding-up of thecable 6 by turni'ng the crank-handle 71. will result in causing thelifting-carriage m and the basket 8 to travel upwardly together, in therelative positions indicated by the dotted lines representing the basketand the link-arms in the lower part of Fig. 2. By referring to the upperpart of the latter figure, it will be seen that the basket 8 may beraised to almost the top of the machine, which may, without lesseningthe height to which the load can be raised, be shorter over all, incomparison with machines heretofore known; or, for the same over-alldimension, the load may be raised higher by a machine of the kind hereinillustrated and described.

In the lowermost position of the basket 8, the link-arms Q rest on andare supported by stop-blocks a that project inwardly from theplatform-arms 0.

I claim:

1. A portable elevator including a main frame; hoisting mechanism; abasket-receiving lifting-carriage open at its top and arranged to travelup and down in said main frame; and a load-receiving basket carried bysaid lifting-carriage and movable up above the same and downtherewithin.

a hoisting-cable attached to the load-1e ceiving basket.

Signed at the city of Jersey City, in the county of Hudson and State ofNew Jersey, this ninth day of March, 1920, in the presence of the twoundersigned witnesses.

HENRY seamen armour), Jr.

Witnesses FLORENCE B. PORTER, WILLIAM W. BOELICK.

